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2 years ago

BRAINLYIST PLEASE HURRYYY

Biology

1 answer:

ohaa [14]2 years ago

3 0

It’s D hope this helps.

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3 years ago

Which is a factor that could interrupt the progress of succession?

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The answer is
D. another natural disturbance

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2 years ago

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The main advantage of solar energy is: A. It is low in cost. B. It can be used all the time. C. It has very little pollution. D.

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3 years ago

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What are the two models of the Solar System? How are they different?

Juli2301 [7.4K]

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Explanation:

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2 years ago

When a living organism dies, it stops taking in new carbon. Thus, as the radioactive carbon-14 decays, the ratio of carbon-12 to

Alexxandr [17]

Answer: The fossil is 11459 years old.

Explanation:

Half-life of carbon-14 = 5700 years

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{5700\text{years}}$

$k=1.21\times 10^{-4}\text{years}^{-1}$

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $1.21\times 10^{-4}\text{years}^{-1}
t = age of sample = ?
a = let initial amount of the reactant = 100 g
x = amount decayed = 75 g
a - x = amount left after decay process = 100 - 75 = 25 g Now put all the given values in above equation, we get
[tex]t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}$

$t=11459years$

The fossil is 11459 years old.

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2 years ago